/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMesh3.h
enumerable object for one-ring vertex neighbours of a vertex, suitable for use with range-based for, ie for ( int i : VtxVerticesItr(VertexID) )
[FSmallListSet::MappedValueEnumerable](API\Runtime\GeometryCore\Util\FSmallListSet\MappedValueEnumerable) VtxVerticesItr ( int VertexID ) const